Piedinature - Pinouts
Nullmodem 9 to 9 Pin Cable

Use this cable between two DTE devices (for instance two computers).

9 PIN D-SUB FEMALE (To Computer 1).

(To Computer 2).

9 PIN D-SUB FEMALE to Computer 1.
9 PIN D-SUB FEMALE to Computer 2.

	D-Sub 1	D-Sub 2
Receive Data	2	3	Transmit Data
Transmit Data	3	2	Receive Data
Data Terminal Ready	4	6+1	Data Set Ready + Carrier Detect
System Ground	5	5	System Ground
Data Set Ready + Carrier Detect	6+1	4	Data Terminal Ready
Request to Send	7	8	Clear to Send
Clear to Send	8	7	Request to Send

Note: DSR & CD are jumpered to fool the programs to think that they are online.

Piedinature - PinoutsNullmodem 9 to 9 Pin Cable